22113222121 has 16 divisors (see below), whose sum is σ = 22752817920. Its totient is φ = 21478625280.

The previous prime is 22113222119. The next prime is 22113222133. The reversal of 22113222121 is 12122231122.

It is a cyclic number.

It is not a de Polignac number, because 22113222121 - 2¹ = 22113222119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22113222191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16970356 + ... + 16971658.

It is an arithmetic number, because the mean of its divisors is an integer number (1422051120).

Almost surely, 2^22113222121 is an apocalyptic number.

It is an amenable number.

22113222121 is a deficient number, since it is larger than the sum of its proper divisors (639595799).

22113222121 is a wasteful number, since it uses less digits than its factorization.

22113222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its digits is 192, while the sum is 19.

Adding to 22113222121 its reverse (12122231122), we get a palindrome (34235453243).

Subtracting from 22113222121 its reverse (12122231122), we obtain a palindrome (9990990999).

It can be divided in two parts, 221132 and 22121, that added together give a triangular number (243253 = T₆₉₇).

The spelling of 22113222121 in words is "twenty-two billion, one hundred thirteen million, two hundred twenty-two thousand, one hundred twenty-one".